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Fasteners
=========
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Overview
--------
A python `package`_ that provides useful locks.
It includes the following.
Locking decorator
*****************
* Helpful ``locked`` decorator (that acquires instance
objects lock(s) and acquires on method entry and
releases on method exit).
Reader-writer locks
*******************
* Multiple readers (at the same time).
* Single writers (blocking any readers).
* Helpful ``read_locked`` and ``write_locked`` decorators.
Inter-process locks
*******************
* Single writer using file based locking (these automatically
release on process exit, even if ``__release__`` or
``__exit__`` is never called).
* Helpful ``interprocess_locked`` decorator.
Generic helpers
***************
* A ``try_lock`` helper context manager that will attempt to
acquire a given lock and provide back whether the attempt
passed or failed (if it passes, then further code in the
context manager will be ran **with** the lock acquired).
.. _package: https://pypi.python.org/pypi/fasteners